Boring machine for paper



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Apr...10, 1923.

A TTORNEY.

Patented Apr. 10,1923.

ISIDORE GESTAS, OF LOSANGELES, CALIFORNIA.-

l BORING MACHINE Foa PAPER.

Application filed September 15, 1921. Serial No.'500,878.

To all whom it may concer/n.

Be it known that I. lsinonn GiisTAs, a citizen of the 4United States,residing at Los Angeles, in the county of Los Angeles and State ofCalifornia. have invented new and useful Improvements in Boring Machinesfor Paper, of which the following is a specification.

This invention relates to a boring niachine for paper and it is theobject of this invention to provide a simple-device that will drillholes in ledger leaves or other loose leaves to be used in the ordinaryloose leaf folders. further object is to provide a cut-ter that willdrill a hole through the paper and at the same time, will cause thedetached. wasted portion to be taken away from the vicinity of thecutter.

Other objects and advantages will be seen and the invention.readilyunderstoml from the following description of the accompanyingdrawings. in which:

Fig. 1 is a side elevation of the device. part of which is broken awayto show details of construction.

iFig. 2 is a4 central section taken on the line 2-2 of Fig. 1.

Fig. 3 is a fragmentary plan view of a leaf after the hole has been cut.

The improved boring machine comprises substantially a base 1, havingsupports 2 projecting upwardly therefrom and terminating in a bearingmember 3, in which is a rotatably slid-ably mounted paper cutter 4. Thecutter is hollow at its lower portion as at 5 and the cutting teeth 6are formed on the tubular part of the drill.

Outlet ports 7 are formed in the upper end of the bore 5 whichterminates intermediate the ends of the drill.

The means provided for drawing the wasted portion cut by the drill,comprises a cylindrical casing 8 having a peripheral portion 9 and upperand lower radial portions 10 which are rotatably supported upon thedrill as -by a radial flange 11 formed on the drill adapted to hold thecasing against the downward movement. The upper portion of the casinghas engagement with a nut 12, screw-threaded upon the drill stem, thecasing being positioned around the port 7 so thatthe wasted portion willbe carried upwardly through the bore 5, the ports7 into the annularchamber 13 within the casing and out through a conduit 14 by suctioncreated by any" suitable means not shown.

Suitable means for forcing the drill down- Wardlythrough an opening 15inthe base l, and into the paper. may be had by placing the stem 16within a chuck of a drill press or other suitable mechanism and meansare provided for normally holding the vcutter out of engagement with thepaper. Such means comprises a spring 17, mounted upon the shaft betweenthe bearing 3 and the casing 8, and to limit the upward movement of thedrill, a collar 18 is fixe-d upon the lower portion of the drill so asto butt against the lower side of the bearing 3.

To facilitate the introduction of the leaf within the folder withoutcompletely removing the covers` of the same, passages 19 are cut fromthe hole 2() in the-.leafb21 to the edge of said leaf and this devicealso provides suitable means for performing this operation. Such meanscomprises a cutter 22, rotatably mounted upon a bracket 23 havingslidable engagement with one of the supports 2 as by a yoke 24.

A bevel gear 25 is fixed upon the cutter a'nd engages a second gear 26fixed upon a shaft 27, journaled at its lower end in the bracket 23 andat its upper end in a bracket 28, projecting outwardly from the casing8. Fixed upon the shaft above the bracket 28 is a gear 29 which engagesa second gear 30 fixed upon the stem16 of the drill and it will be seenthat as the drill is rotated, the cutter 22 will rotate also and byplacing the device so.y that `the periphery of the cutter will justengage the outer side of the hole, the cutter then being pushed downwardwill form the groove 19.

Various changes may be made in the details of construction by thoseskilled in the art without departing from the spirit of my invention asset forth in the appended claims. y

I claim as my invention:

1. A paper boring machine, comprising a support, a cutter having a stemmounted. in said support, a passageway through said stem, a cham-bersurrounding said stein,

ports in said stem communicating with Said chamber, and means forcausing the wasted portion of the paper to pass into said chamberthrough said passage and ports.

2. A paper boring machine comprising a cutter having a tubular shank, aflange formed on the shank, a stem formed in the end of the shanka nuton the stem, and a casin arranged between and engaged by said ange andnut, said shank being formed with openings 4between the fiange and nutto provide communication between the shank and said casin 3. Av aperoring machine comprising a cutter aving a tubular shank, a- ILangeformed,l on the shank, a stem formed in the end of the shank, a nut onthe stem; and a casing arranged between and engaged by' said lange andnut, said shank being ormed with openings between the fiange and nutISIDORE GESTAS.

